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                    介绍ABOUT
            
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        <li class="header">【第一章】Java基础</li>
        
        
    
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                    计算机基础-操作系统-进程-计算机网络
            
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                    集合
            
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                    队列-queue
            
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                    volatile&synchronized
            
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                    object/wait/notify
            
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                    thread
            
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                    线程池的工作原理
            
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                    lock&ReentrantLock&ReadWriteLock
            
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                    lock&condition
            
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                    Java并发工具- CountDownLatch&CyclicBarrier 
            
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                    Java同步工具类- CountDownLatch&CyclicBarrier&Semaphore  
            
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                    java8-新的日期时间API 
            
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                    Java bean转Map 
            
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                    算法题 - 合并排序数组 
            
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                    算法题 - 最低分数线问题 
            
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                    算法题 - 求数组的子集合 
            
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                    SpringBoot
            
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                    SpringBoot项目启动脚本
            
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                    Spring面试题68
            
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                    SpringBoot自动装载机制 - 源码分析
            
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                    Freemarker自动生成Java bean代码
            
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                    mybatis中操作元数据
            
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                    mybatis中insert/update/delete标签中执行多条SQL语句
            
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                    springboot集成mybatis-plus框架
            
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                    【分布式】sharding-jdbc实现分库分表
            
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                    SQL常用使用
            
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                    redis学习笔记
            
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                    Redis中的队列list实现秒杀活动抢购
            
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                    mysql绿色版安装服务教程
            
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                    H2内嵌数据的使用
            
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                    缓存
            
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                    MySQL单表备份还原
            
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                    web简单积累
            
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                    linux常用命令
            
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                    windows常用命令
            
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        <li class="header">【第八章】错误集</li>
        
        
    
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                    maven引入依赖时识别不到本地仓库的jar
            
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                    spring security 配置发生错误 Can't configure antMatchers after anyRequest
            
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        <li class="chapter " data-level="25.1" data-path="../error/AOP_stream_close_error.html">
            
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                    AOP内获取了对请求流操作后报流已经关闭错误的问题
            
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        <li class="chapter " data-level="26.1" data-path="../tools/github/github_ssh.html">
            
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                    Github ssh key 解决提交后push频繁输入用户名和密码
            
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                    sharding-jdbc-4.1.1版本启动数据源报错问题
            
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                                <div id="anchor-navigation-ex-navbar"><i class="fa fa-navicon"></i><ul><li><span class="title-icon "></span><a href="#1&#x3001;&#x5E38;&#x7528;&#x547D;&#x4EE4;"><b></b>1&#x3001;&#x5E38;&#x7528;&#x547D;&#x4EE4;</a></li><ul><li><span class="title-icon "></span><a href="#11&#x3001;&#x76EE;&#x5F55;&#x64CD;&#x4F5C;"><b></b>1.1&#x3001;&#x76EE;&#x5F55;&#x64CD;&#x4F5C;</a></li><ul><li><span class="title-icon "></span><a href="#mkdir"><b></b>mkdir</a></li><li><span class="title-icon "></span><a href="#scp"><b></b>scp</a></li><li><span class="title-icon "></span><a href="#rm"><b></b>rm</a></li></ul><li><span class="title-icon "></span><a href="#12&#x3001;&#x6587;&#x4EF6;&#x64CD;&#x4F5C;"><b></b>1.2&#x3001;&#x6587;&#x4EF6;&#x64CD;&#x4F5C;</a></li><ul><li><span class="title-icon "></span><a href="#tail"><b></b>tail</a></li><li><span class="title-icon "></span><a href="#find-&#x67E5;&#x627E;"><b></b>find &#x67E5;&#x627E;</a></li><li><span class="title-icon "></span><a href="#grep-&#x641C;&#x7D22;"><b></b>grep &#x641C;&#x7D22;</a></li></ul><li><span class="title-icon "></span><a href="#13&#x3001;&#x6743;&#x9650;&#x7BA1;&#x7406;"><b></b>1.3&#x3001;&#x6743;&#x9650;&#x7BA1;&#x7406;</a></li><ul><li><span class="title-icon "></span><a href="#chmod"><b></b>chmod</a></li><li><span class="title-icon "></span><a href="#chown"><b></b>chown</a></li><li><span class="title-icon "></span><a href="#chgrp"><b></b>chgrp</a></li></ul><li><span class="title-icon "></span><a href="#14&#x3001;&#x7528;&#x6237;&#x7BA1;&#x7406;"><b></b>1.4&#x3001;&#x7528;&#x6237;&#x7BA1;&#x7406;</a></li><ul><li><span class="title-icon "></span><a href="#su"><b></b>su</a></li><li><span class="title-icon "></span><a href="#useradd"><b></b>useradd</a></li><li><span class="title-icon "></span><a href="#userdel"><b></b>userdel</a></li><li><span class="title-icon "></span><a href="#passwd"><b></b>passwd</a></li></ul><li><span class="title-icon "></span><a href="#15&#x3001;&#x538B;&#x7F29;&#x89E3;&#x538B;"><b></b>1.5&#x3001;&#x538B;&#x7F29;&#x89E3;&#x538B;</a></li><ul><li><span class="title-icon "></span><a href="#zip-&#x538B;&#x7F29;"><b></b>zip &#x538B;&#x7F29;</a></li><li><span class="title-icon "></span><a href="#unzip-&#x89E3;&#x538B;"><b></b>unzip &#x89E3;&#x538B;</a></li><li><span class="title-icon "></span><a href="#gzip-&#x538B;&#x7F29;"><b></b>gzip &#x538B;&#x7F29;</a></li><li><span class="title-icon "></span><a href="#gunzip-&#x89E3;&#x538B;"><b></b>gunzip &#x89E3;&#x538B;</a></li><li><span class="title-icon "></span><a href="#tar"><b></b>tar</a></li></ul><li><span class="title-icon "></span><a href="#16&#x3001;&#x7F51;&#x7EDC;"><b></b>1.6&#x3001;&#x7F51;&#x7EDC;</a></li><ul><li><span class="title-icon "></span><a href="#ps"><b></b>ps</a></li><li><span class="title-icon "></span><a href="#telnet"><b></b>telnet</a></li><li><span class="title-icon "></span><a href="#ping"><b></b>ping</a></li><li><span class="title-icon "></span><a href="#ifconfig"><b></b>ifconfig</a></li><li><span class="title-icon "></span><a href="#&#x5173;&#x95ED;&#x9632;&#x706B;&#x5899;"><b></b>&#x5173;&#x95ED;&#x9632;&#x706B;&#x5899;</a></li></ul><li><span class="title-icon "></span><a href="#17&#x3001;&#x78C1;&#x76D8;&#x64CD;&#x4F5C;"><b></b>1.7&#x3001;&#x78C1;&#x76D8;&#x64CD;&#x4F5C;</a></li><ul><li><span class="title-icon "></span><a href="#df"><b></b>df</a></li><li><span class="title-icon "></span><a href="#du"><b></b>du</a></li><li><span class="title-icon "></span><a href="#free"><b></b>free</a></li></ul><li><span class="title-icon "></span><a href="#18&#x3001;&#x5EFA;&#x7ACB;&#x4FE1;&#x4EFB;"><b></b>1.8&#x3001;&#x5EFA;&#x7ACB;&#x4FE1;&#x4EFB;</a></li></ul></ul></div><h1 id="1&#x3001;&#x5E38;&#x7528;&#x547D;&#x4EE4;"><a name="1&#x3001;&#x5E38;&#x7528;&#x547D;&#x4EE4;" class="anchor-navigation-ex-anchor" href="#1&#x3001;&#x5E38;&#x7528;&#x547D;&#x4EE4;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>1&#x3001;&#x5E38;&#x7528;&#x547D;&#x4EE4;</strong></h1>
<h2 id="11&#x3001;&#x76EE;&#x5F55;&#x64CD;&#x4F5C;"><a name="11&#x3001;&#x76EE;&#x5F55;&#x64CD;&#x4F5C;" class="anchor-navigation-ex-anchor" href="#11&#x3001;&#x76EE;&#x5F55;&#x64CD;&#x4F5C;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>1.1&#x3001;&#x76EE;&#x5F55;&#x64CD;&#x4F5C;</strong></h2>
<h3 id="mkdir"><a name="mkdir" class="anchor-navigation-ex-anchor" href="#mkdir"><i class="fa fa-link" aria-hidden="true"></i></a><strong>mkdir</strong></h3>
<p><strong>&#x9012;&#x5F52;&#x521B;&#x5EFA;&#x76EE;&#x5F55;</strong></p>
<pre><code class="lang-shell">mkdir &#x2013;p /home/java/xx
</code></pre>
<h3 id="scp"><a name="scp" class="anchor-navigation-ex-anchor" href="#scp"><i class="fa fa-link" aria-hidden="true"></i></a><strong>scp</strong></h3>
<p><strong>&#x8FDC;&#x7A0B;&#x590D;&#x5236;</strong></p>
<pre><code class="lang-shell">scp &#x6E90;&#x5730;&#x5740; &#x76EE;&#x7684;&#x5730;&#x5740; 
    &#x5982;: scp /home (username)@IP:/home    
    scp /home 192.168.1.1:/home
</code></pre>
<h3 id="rm"><a name="rm" class="anchor-navigation-ex-anchor" href="#rm"><i class="fa fa-link" aria-hidden="true"></i></a><strong>rm</strong></h3>
<p><strong>&#x5220;&#x9664;</strong></p>
<pre><code class="lang-shell"> rm &#x2013;rf /home/java  &#x5F3A;&#x5236;&#x5220;&#x9664;
</code></pre>
<h2 id="12&#x3001;&#x6587;&#x4EF6;&#x64CD;&#x4F5C;"><a name="12&#x3001;&#x6587;&#x4EF6;&#x64CD;&#x4F5C;" class="anchor-navigation-ex-anchor" href="#12&#x3001;&#x6587;&#x4EF6;&#x64CD;&#x4F5C;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>1.2&#x3001;&#x6587;&#x4EF6;&#x64CD;&#x4F5C;</strong></h2>
<h3 id="tail"><a name="tail" class="anchor-navigation-ex-anchor" href="#tail"><i class="fa fa-link" aria-hidden="true"></i></a><strong>tail</strong></h3>
<p><strong>&#x52A8;&#x6001;&#x663E;&#x793A;</strong></p>
<pre><code class="lang-shell">tail &#x2013;f &#x2013;n 1000 xx.log
</code></pre>
<h3 id="find-&#x67E5;&#x627E;"><a name="find-&#x67E5;&#x627E;" class="anchor-navigation-ex-anchor" href="#find-&#x67E5;&#x627E;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>find &#x67E5;&#x627E;</strong></h3>
<pre><code class="lang-shell">
 ## &#x5728;&#x76EE;&#x5F55;etc&#x4E0B;&#x6309;&#x540D;&#x5B57;test&#x67E5;&#x627E;  
 find /etc &#x2013;name test             

&#x200B;    -iname test &#x4E0D;&#x533A;&#x5206;&#x5927;&#x5C0F;&#x5199;              

## &#x67E5;&#x627E;&#x5927;&#x4E8E;100M&#x7684;&#x6587;&#x4EF6;(+n &#x5927;&#x4E8E; &#x2013;n &#x5C0F;&#x4E8E; n &#x7B49;&#x4E8E;)  
&#x200B;    -size +100M             

## &#x67E5;&#x627E;&#x6240;&#x5C5E;&#x7528;&#x6237;&#x4E3A;admin&#x7684;&#x6587;&#x4EF6;   
&#x200B;    -user admin            

## &#x67E5;&#x627E;5&#x5206;&#x949F;&#x5185;&#x88AB;&#x4FEE;&#x6539;&#x8FC7;&#x5C5E;&#x6027;&#x7684;&#x6587;&#x4EF6;&#x53CA;&#x76EE;&#x5F55; c   change         
&#x200B;    -cmin -5         

## &#x67E5;&#x627E;5&#x5206;&#x949F;&#x5185;&#x88AB;&#x8BBF;&#x95EE;&#x8FC7;&#x7684;&#x6587;&#x4EF6; a access    
&#x200B;    -amin -5              

## &#x67E5;&#x627E;5&#x5206;&#x949F;&#x5185;&#x4FEE;&#x6539;&#x5185;&#x5BB9;&#x7684;&#x6587;&#x4EF6; m   modify
&#x200B;    -mmin -5
</code></pre>
<h3 id="grep-&#x641C;&#x7D22;"><a name="grep-&#x641C;&#x7D22;" class="anchor-navigation-ex-anchor" href="#grep-&#x641C;&#x7D22;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>grep &#x641C;&#x7D22;</strong></h3>
<pre><code class="lang-shell"># &#x5728;&#x6587;&#x4EF6;test.txt&#x4E2D;&#x641C;&#x7D22;&#x5339;&#x914D;a&#x7684;&#x5173;&#x952E;&#x5B57;  
grep &#x2018;a&#x2019; test.txt     

# test.txt &#x5728;&#x6587;&#x4EF6;&#x4E2D;&#x641C;&#x7D22;&#x5339;&#x914D;&#x5173;&#x952E;&#x5B57;&#x5E76;&#x8F93;&#x51FA;&#x524D;20&#x884C;&#x540E;10&#x884C;&#x95F4;&#x7684;&#x6570;&#x636E;   
grep &#x2013;A 10 &#x2013;B 20 keyword   

# &#x5FFD;&#x7565;&#x5927;&#x5C0F;&#x5199;&#x641C;&#x7D22;&#x5339;&#x914D;  
grep &#x2013;i keyword test.txt  

# &#x6392;&#x9664;&#x641C;&#x7D22;&#x5339;&#x914D;
grep &#x2013;v keywory test.txt  

# &#x67E5;&#x627E;&#x65E5;&#x5FD7;&#x6587;&#x4EF6;&#x4E2D;&#x5B58;&#x5728;&#x5173;&#x952E;&#x8BCD;&#x2018;&#x9519;&#x8BEF;&#x2019;&#x7684;&#x524D;&#x540E;10&#x884C;&#x5E76;&#x4E14;&#x9AD8;&#x4EAE;&#x663E;&#x793A;
grep -A 10 -B 10 --color &apos;&#x9519;&#x8BEF;&apos; error.log
</code></pre>
<h2 id="13&#x3001;&#x6743;&#x9650;&#x7BA1;&#x7406;"><a name="13&#x3001;&#x6743;&#x9650;&#x7BA1;&#x7406;" class="anchor-navigation-ex-anchor" href="#13&#x3001;&#x6743;&#x9650;&#x7BA1;&#x7406;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>1.3&#x3001;&#x6743;&#x9650;&#x7BA1;&#x7406;</strong></h2>
<h3 id="chmod"><a name="chmod" class="anchor-navigation-ex-anchor" href="#chmod"><i class="fa fa-link" aria-hidden="true"></i></a><strong>chmod</strong></h3>
<p>&#x4FEE;&#x6539;&#x6743;&#x9650;</p>
<pre><code class="lang-shell"> ## # &#x9012;&#x5F52;&#x8D4B;&#x4E88;&#x6743;&#x9650;(&#x53CA;&#x76EE;&#x5F55;&#x4E0B;&#x6240;&#x4EE5;&#x6587;&#x4EF6;&#x53CA;&#x6587;&#x4EF6;&#x5939;&#x90FD;&#x5177;&#x6709;&#x6743;&#x9650;)   
 chmod &#x2013;R 777 /home/java
</code></pre>
<h3 id="chown"><a name="chown" class="anchor-navigation-ex-anchor" href="#chown"><i class="fa fa-link" aria-hidden="true"></i></a><strong>chown</strong></h3>
<p>&#x4FEE;&#x6539;&#x6240;&#x5C5E;&#x8005;</p>
<pre><code class="lang-shell"> ## # &#x6539;&#x53D8;&#x6587;&#x4EF6;test.txt&#x7684;&#x6240;&#x5C5E;&#x8005;&#x4E3A;admin   
 chown admin test.txt
</code></pre>
<h3 id="chgrp"><a name="chgrp" class="anchor-navigation-ex-anchor" href="#chgrp"><i class="fa fa-link" aria-hidden="true"></i></a><strong>chgrp</strong></h3>
<p>&#x6539;&#x53D8;&#x6240;&#x5C5E;&#x7EC4;</p>
<pre><code class="lang-bash"><span class="hljs-comment">## # &#x6539;&#x53D8;&#x6587;&#x4EF6;test.txt&#x7684;&#x6240;&#x5C5E;&#x7EC4;&#x4E3A;group   </span>
chgrp group test.txt
</code></pre>
<h2 id="14&#x3001;&#x7528;&#x6237;&#x7BA1;&#x7406;"><a name="14&#x3001;&#x7528;&#x6237;&#x7BA1;&#x7406;" class="anchor-navigation-ex-anchor" href="#14&#x3001;&#x7528;&#x6237;&#x7BA1;&#x7406;"><i class="fa fa-link" aria-hidden="true"></i></a>1.4&#x3001;<strong>&#x7528;&#x6237;&#x7BA1;&#x7406;</strong></h2>
<h3 id="su"><a name="su" class="anchor-navigation-ex-anchor" href="#su"><i class="fa fa-link" aria-hidden="true"></i></a>su</h3>
<p><strong>su &#x5207;&#x6362;&#x7528;&#x6237;</strong></p>
<pre><code class="lang-sh"><span class="hljs-comment">## # &#x5207;&#x6362;&#x5230;admin&#x7528;&#x6237;&#x4E0B;   </span>
su &#x2013; admin
</code></pre>
<h3 id="useradd"><a name="useradd" class="anchor-navigation-ex-anchor" href="#useradd"><i class="fa fa-link" aria-hidden="true"></i></a>useradd</h3>
<p><strong>useradd &#x6DFB;&#x52A0;&#x7528;&#x6237;</strong></p>
<pre><code class="lang-shell">## # &#x65B0;&#x5EFA;&#x4E00;&#x4E2A;admin&#x7528;&#x6237;   
useradd admin
</code></pre>
<h3 id="userdel"><a name="userdel" class="anchor-navigation-ex-anchor" href="#userdel"><i class="fa fa-link" aria-hidden="true"></i></a>userdel</h3>
<p><strong>userdel &#x6DFB;&#x52A0;&#x7528;&#x6237;</strong></p>
<pre><code class="lang-shell">## # &#x5220;&#x9664;&#x7528;&#x6237;&#x7684;&#x540C;&#x65F6;&#x5220;&#x9664;&#x7528;&#x6237;&#x7684;&#x6839;&#x76EE;&#x5F55;(/home/admin)   
userdel -r admin
</code></pre>
<h3 id="passwd"><a name="passwd" class="anchor-navigation-ex-anchor" href="#passwd"><i class="fa fa-link" aria-hidden="true"></i></a>passwd</h3>
<p><strong>passwd &#x8BBE;&#x7F6E;&#x5BC6;&#x7801;</strong></p>
<pre><code class="lang-shell">## # &#x4E3A;admin&#x7528;&#x6237;&#x8BBE;&#x7F6E;&#x5BC6;&#x7801;   
passwd admin
</code></pre>
<h2 id="15&#x3001;&#x538B;&#x7F29;&#x89E3;&#x538B;"><a name="15&#x3001;&#x538B;&#x7F29;&#x89E3;&#x538B;" class="anchor-navigation-ex-anchor" href="#15&#x3001;&#x538B;&#x7F29;&#x89E3;&#x538B;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>1.5&#x3001;&#x538B;&#x7F29;&#x89E3;&#x538B;</strong></h2>
<h3 id="zip-&#x538B;&#x7F29;"><a name="zip-&#x538B;&#x7F29;" class="anchor-navigation-ex-anchor" href="#zip-&#x538B;&#x7F29;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>zip &#x538B;&#x7F29;</strong></h3>
<pre><code class="lang-shell"> ## # &#x5C06;java&#x76EE;&#x5F55;&#x53CA;&#x76EE;&#x5F55;&#x4E0B;&#x6240;&#x4EE5;&#x6587;&#x4EF6;&#x538B;&#x7F29;&#x6210;java.zip   
 zip &#x2013;r java.zip java
</code></pre>
<h3 id="unzip-&#x89E3;&#x538B;"><a name="unzip-&#x89E3;&#x538B;" class="anchor-navigation-ex-anchor" href="#unzip-&#x89E3;&#x538B;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>unzip &#x89E3;&#x538B;</strong></h3>
<pre><code class="lang-shell">## # &#x5C06;java.zip&#x89E3;&#x538B;&#x5230;&#x5F53;&#x524D;&#x76EE;&#x5F55;&#x4E0B;&#x7684;java&#x6587;&#x4EF6;&#x5939;&#x91CC;   
unzip java.zip &#x2013;d  ./java
</code></pre>
<h3 id="gzip-&#x538B;&#x7F29;"><a name="gzip-&#x538B;&#x7F29;" class="anchor-navigation-ex-anchor" href="#gzip-&#x538B;&#x7F29;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>gzip &#x538B;&#x7F29;</strong></h3>
<pre><code class="lang-shell">## # &#x5C06;&#x6587;&#x4EF6;build.sh&#x6253;&#x5305;&#x6210;build.sh.gz   
gzip -c build.sh &gt; build.sh.gz
</code></pre>
<h3 id="gunzip-&#x89E3;&#x538B;"><a name="gunzip-&#x89E3;&#x538B;" class="anchor-navigation-ex-anchor" href="#gunzip-&#x89E3;&#x538B;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>gunzip &#x89E3;&#x538B;</strong></h3>
<pre><code class="lang-shell">gunzip build.sh.gz  # &#x89E3;&#x538B;
</code></pre>
<h3 id="tar"><a name="tar" class="anchor-navigation-ex-anchor" href="#tar"><i class="fa fa-link" aria-hidden="true"></i></a><strong>tar</strong></h3>
<pre><code class="lang-shell">tar - czvf 123.tar.gz 123 &#x6253;&#x5305; 

&#x200B;    &#x2013;c &#x6253;&#x5305; 

&#x200B;    &#x2013;z &#x6253;&#x5305;&#x5E76;&#x538B;&#x7F29; 

&#x200B;    &#x2013;v &#x663E;&#x793A;&#x6253;&#x5305;&#x8FC7;&#x7A0B; 

&#x200B;    &#x2013;f &#x6307;&#x5B9A;&#x6587;&#x4EF6;&#x540D;   

tar &#x2013;xzvf 123.tar.gz &#x89E3;&#x538B; 

    &#x2013;x &#x89E3;&#x5305;
</code></pre>
<h2 id="16&#x3001;&#x7F51;&#x7EDC;"><a name="16&#x3001;&#x7F51;&#x7EDC;" class="anchor-navigation-ex-anchor" href="#16&#x3001;&#x7F51;&#x7EDC;"><i class="fa fa-link" aria-hidden="true"></i></a><strong>1.6&#x3001;&#x7F51;&#x7EDC;</strong></h2>
<h3 id="ps"><a name="ps" class="anchor-navigation-ex-anchor" href="#ps"><i class="fa fa-link" aria-hidden="true"></i></a>ps</h3>
<p>&#x67E5;&#x627E;&#x8FDB;&#x7A0B;</p>
<pre><code class="lang-shell">ps -ef | grep &#x8FDB;&#x7A0B;&#x540D; | grep -v grep 
## -v &#x662F;&#x6392;&#x9664;
</code></pre>
<h3 id="telnet"><a name="telnet" class="anchor-navigation-ex-anchor" href="#telnet"><i class="fa fa-link" aria-hidden="true"></i></a>telnet</h3>
<p><strong>telnet&#x67E5;&#x8BE2;&#x7AEF;&#x53E3;&#x662F;&#x5426;&#x8C03;&#x901A;</strong></p>
<pre><code class="lang-shell">telnet IP port
</code></pre>
<h3 id="ping"><a name="ping" class="anchor-navigation-ex-anchor" href="#ping"><i class="fa fa-link" aria-hidden="true"></i></a>ping</h3>
<p><strong>ping &#x6D4B;&#x8BD5;&#x7F51;&#x7EDC;&#x8FDE;&#x901A;&#x6027;</strong></p>
<pre><code class="lang-shell">ping &#x2013;c3 ip  c3&#x6B21;&#x6570;
</code></pre>
<h3 id="ifconfig"><a name="ifconfig" class="anchor-navigation-ex-anchor" href="#ifconfig"><i class="fa fa-link" aria-hidden="true"></i></a>ifconfig</h3>
<p><strong>ifconfig &#x67E5;&#x770B;/&#x8BBE;&#x7F6E;&#x7F51;&#x5361;&#x4FE1;&#x606F;</strong></p>
<pre><code class="lang-shell">## # &#x67E5;&#x770B;&#x7F51;&#x5361;&#x4FE1;&#x606F;
ifconfig     

## # &#x4E34;&#x65F6;&#x8BBE;&#x7F6E;eth0&#x7684;ip&#x5730;&#x5740;&#x4E3A;192.168.1.100   
ifconfig eth0 192.168.1.100
</code></pre>
<h3 id="&#x5173;&#x95ED;&#x9632;&#x706B;&#x5899;"><a name="&#x5173;&#x95ED;&#x9632;&#x706B;&#x5899;" class="anchor-navigation-ex-anchor" href="#&#x5173;&#x95ED;&#x9632;&#x706B;&#x5899;"><i class="fa fa-link" aria-hidden="true"></i></a>&#x5173;&#x95ED;&#x9632;&#x706B;&#x5899;</h3>
<pre><code class="lang-shell">## &#x67E5;&#x770B;&#x9632;&#x706B;&#x5899;&#x72B6;&#x6001;
service iptables status

## &#x5173;&#x95ED;&#x9632;&#x706B;&#x5899;
service iptables stop

##&#x6DFB;&#x52A0;&#x5230;&#x5F00;&#x673A;&#x81EA;&#x542F;,&#x9632;&#x6B62;&#x670D;&#x52A1;&#x5668;&#x91CD;&#x542F;&#x540E;&#xFF0C;&#x6CA1;&#x6709;&#x5173;&#x95ED;&#x9632;&#x706B;&#x5899;
chkconfig iptables off
</code></pre>
<h2 id="17&#x3001;&#x78C1;&#x76D8;&#x64CD;&#x4F5C;"><a name="17&#x3001;&#x78C1;&#x76D8;&#x64CD;&#x4F5C;" class="anchor-navigation-ex-anchor" href="#17&#x3001;&#x78C1;&#x76D8;&#x64CD;&#x4F5C;"><i class="fa fa-link" aria-hidden="true"></i></a>1.7&#x3001;&#x78C1;&#x76D8;&#x64CD;&#x4F5C;</h2>
<h3 id="df"><a name="df" class="anchor-navigation-ex-anchor" href="#df"><i class="fa fa-link" aria-hidden="true"></i></a>df</h3>
<p>&#x67E5;&#x770B;&#x78C1;&#x76D8;&#x5927;&#x5C0F;</p>
<pre><code class="lang-powershell">df -h path
<span class="hljs-comment"># path&#x662F;&#x67E5;&#x770B;&#x8DEF;&#x5F84;&#xFF0C;&#x67E5;&#x770B;&#x5F53;&#x524D;&#x76EE;&#x5F55;&#xFF0C;&#x5219;&#x76F4;&#x63A5;&#x662F; df -h</span>
</code></pre>
<h3 id="du"><a name="du" class="anchor-navigation-ex-anchor" href="#du"><i class="fa fa-link" aria-hidden="true"></i></a>du</h3>
<p>&#x67E5;&#x770B;&#x5F53;&#x524D;&#x76EE;&#x5F55;&#x6BCF;&#x4E2A;&#x6587;&#x4EF6;&#x5939;&#x7684;&#x60C5;&#x51B5;</p>
<pre><code class="lang-powershell">du --max-depth=<span class="hljs-number">1</span> -h path
<span class="hljs-comment"># &#x6216;&#x8005;</span>
du -sh path
</code></pre>
<h3 id="free"><a name="free" class="anchor-navigation-ex-anchor" href="#free"><i class="fa fa-link" aria-hidden="true"></i></a>free</h3>
<p>&#x67E5;&#x770B;&#x670D;&#x52A1;&#x5668;&#x5185;&#x5B58;&#x5927;&#x5C0F;</p>
<pre><code class="lang-shell">free -h
</code></pre>
<h2 id="18&#x3001;&#x5EFA;&#x7ACB;&#x4FE1;&#x4EFB;"><a name="18&#x3001;&#x5EFA;&#x7ACB;&#x4FE1;&#x4EFB;" class="anchor-navigation-ex-anchor" href="#18&#x3001;&#x5EFA;&#x7ACB;&#x4FE1;&#x4EFB;"><i class="fa fa-link" aria-hidden="true"></i></a>1.8&#x3001;&#x5EFA;&#x7ACB;&#x4FE1;&#x4EFB;</h2>
<p>   &#x5B9E;&#x73B0;&#x4E3B;&#x673A;A&#x548C;&#x4E3B;&#x673A;B&#x95F4;&#x7684;&#x4FE1;&#x4EFB;&#x8FDE;&#x63A5;&#x6B65;&#x9AA4;&#xFF1A;   </p>
<p>&#x200B;    1&#xFF09;  &#x4E3B;&#x673A;A&#x4E0A;&#x4F7F;&#x7528;&#x547D;&#x4EE4;&#x521B;&#x5EFA;&#x5BC6;&#x94A5;&#xFF1A;<strong>ssh &#x2013;keygen &#x2013;t rsa</strong>   </p>
<p>&#x200B;    2&#xFF09;  &#x628A;&#x4E3B;&#x673A;A&#x7684;/root/.ssh/id_ras.pub&#x6587;&#x4EF6;&#x5185;&#x5BB9;&#x590D;&#x5236;&#x5230;&#x4E3B;&#x673A;B&#x7684;/root/.ssh/authorized_keys   </p>
<p>&#x200B;    3&#xFF09;  &#x6B64;&#x65F6;&#x4E3B;&#x673A;A&#x8FDE;&#x63A5;&#x4E3B;&#x673A;B&#x5C31;&#x4E0D;&#x9700;&#x5BC6;&#x7801;&#x4E86;   </p>
<p>&#x200B;    4&#xFF09;  &#x76F8;&#x540C;&#x7684;&#xFF0C;&#x628A;&#x4E3B;&#x673A;B&#x516C;&#x5171;&#x5BC6;&#x94A5;&#x590D;&#x5236;&#x62F7;&#x8D1D;&#x5230;&#x4E3B;&#x673A;A&#x7684;/root/.ssh/authorized_keys&#x4E0B;   </p>
<p>&#x200B;    5&#xFF09;  &#x6B64;&#x65F6;&#x4E3B;&#x673A;A&#x548C;&#x4E3B;&#x673A;B&#x95F4;&#x5C31;&#x5EFA;&#x7ACB;&#x8D77;&#x4FE1;&#x4EFB;&#x4E86;   </p>
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